Arylhydroxynaphthylketone and process of making same



Patented Nov. 1 8, i 1924.

UNITED STATES PATENT oFFics.

G'UIIDAUME n! HONTMOIIIIIN AND GERALD BONHQIE, OF BASED, SWITZERLAND, AS-

SIGNORS '10 SOCIETY LAND.

OF CHEMICAL INDUSTRY IN BASLE, OF BASEL, SWITZER- ABYLHYDROXYNAPHTHYLKETONE AND PRQCESS OF MAKING SAME.

Io Drawing.

To all whom it ma concem:

Be it known t at we, Gmmnumn on MoNTiuoLLm and Grimm) Bonnrn, both citizens of'the Swiss Republic, and residents of Basel, Switzerland, have invented new and useful Arylhydroxynaphthylketones and ,Processes of Making Same, of which the following is a hill, clear, and exact specification.

We have found that by acting, in absence of substances capable of neutralizing acids, on betanaphthol and on monohydroxynaphthalenes which bear further negative sub stituents other than Old-groups with bodies corresponding to the formula RFCZGl wherein R stands for an aromatic nucleus, which may bear other substituents, as for instance phenylchloroferm, its substitution products, and naphthylchloroforms, there are obtained new aryhnonchydroxynaphthylketones. These latter correspond to the general formula MO-R', wherein R stands for an aromatic nuclueus which may bear other substituents and R for a lay droxynaphthalene nucleus which may also bear other negative substituents excepting Oil-groups These new productsconstitute colorless orslightlycolored powders soluble in alkalies with a yellow coloration and in concentrated sulfuric acid with a yellowbrown coloration. They are very interested with an excess of acid which'precipitates ,0 sulfuric acid to yellow solutions.

ing for the manufacture of dyestufis,

Eaamgotc Z,

(188 parts of Lhydronynaphthalens-Q-carboxylic acid are introduced into 230 arts of phenylchloroform and the solution t us obtained is heated to about 100-12 0 C., until the evolution of hydrochloric acid ceases. The excess oil henyl-chloroform is distilled on in vacuo. he residue is boiled for some time with dilutecaustic soda solution, the solution thus obtained is filtered, then treatthe 1 phenylketone-4-hydroxynaphthalened carboxylic acid. crystallized from dilute acetic acidthe new ketone melts at 205 6., it dissolves in alkalies and in concentrated 1 By eliminating or splittin off the carboxylic v up,

there is obtain the l-phenyl--hy oxyand by starting Application filed July 17, me. Serial No 575,579.

naphthylketone described by Scholl and Seer in Liebigs Annalen N0. 394:, page 15L Example 2 19.5 arts of phenylchloroform and 18.8 parts 0 l-hydroxynaphthalene-2-carboxylic acid are introduced into 100 parts or; sulfuric acid and the whole is stirred at ordinary temperature until the evolution of hydrochloric acid ceases. Then the whose mas is poured into water and the precipitated l-phenylketone-a-hydroxynaphthalene-3-carboxylic acid is filtered ofi.

in analogous manner there are obtained by starting from l-hydroxynaphthalene-2- carboxylic acid and from orthochloro henylchlorofcrm or from l-chloro-Q-napht' ylchloroform, the 1- 2-chlorophenyl-) -ketone- 4: hydroxynaphtha ene 3 carbcxylic acid melting at 213 C. or the 1-chloro-2:1- dinaphthylketonel-hydroxy 3 carboxylic acid melting at 210 211 6., by starting from betanaphthol and from phenylchloroform the l-phenylketone-Q-hydroxynaphthalene melting M1175"? by starting from. 2 hydroxynaphthalene 3 carbcxylic acid and from phenylchloroform the l-phenylketone-2-hydroxynaphtha1ene-3-carboxylic acid from phenylchloroform and from 1-ch1oro-8-hydroxynaphthalene the l-phenylketone-et-hydroxy-5-chloronaphthalene melting at 121 C.

The suli'onic acids of the naphthols react in the same manner. There can for instance be obtained by starting from l-hydroxynaphthalene-Q-sulfonic acid the l-phenyllgetone-4-hydroxynaphthalene-3 sulfonic ac1d, by starting from l-hydroxynaphthalene-S- sultonio ac1d the l-phenylketonel-hydroxynaphthalene-ti-sulfonic acid; the l-hydroxynaphthalene-t-snlfonic acid and the l-hydroxynaphthalene-5-sulfonic acid give the Q-phenylketone-1-hydr0xynaphthalene-4-sulionic acid and the 2-phenylketone-1-hydroxynaphthalenei-sulfonic acid and the Q-hydroxynaphthalene-G-sulfonie acid gives the 1-phenylketone-2-hydroxynaphthalene-6- sulfonic acid.

All these ketones are more or less white powders; they dissolve in alkalies with yelfuric acid serving as reaction medlum will be reduced or increased; the sulfuric acid can also be replaced more or less completely by an indiflerent liquid as for instance nitrobenzene.

What we claim is: 1. The herein described process for the manufacture of arylmonohydroxynaphthylketones corresponding to the general formula R-GO-R, wherein R stands forv an aromatic nucleus, which may bear other substituents with the exception of a carboxyl group, and R for a hydroxynaphthalene nucleus which still bears negative substituents other than hydroxyl groups, consisting in acting, in absence of substances capable of neutralizing acids, on monohydroxynaphthalenes which bear further negative substituents other than OH- groups with arylchloroforms.

2. The herein described process for the manufacture of arylmonohydroxynaphthylketones corresponding to the general formula R-CO-R', wherein R stands for an aromatic nucleus, which may bear other negative substituents with the exception of a carboxyl group and R for an alphahydroxynaphthalene nucleus, which still bears negative substituents other than hydroxyl groups, consisting in acting in absence of substances capable of neutralizing acids on derivatives of alphanaphthol bearing ne ative substituents, exception being made or the OH-group, with ar lchloroforms.

3. The herein descri ed process for the manufacture of arylmonohydroxynaphthylketones of the general formula R-C O-R,

wherein R stands for an aromatic nucleus which may bear other substituents with the exception of a carboxyl roup and R for an alphahydroxynaphtha ene nucleus hearing a negative substituent other than OH- groups in the 3 position, consisting in actmg, in absence of substances capable of neutralizing acids, on alphanaphtholderivatives ne atively substituted in their 2 position wit other substituents than with OH- 'groups, with arylchloroforms.

4. The herein described process for the manufacture of arylmonohydroxyngphthfilv ketones of the general formula R- wherem R stands for an aromatic nucleus which may bear other substituents with the exceptlon of a carboxyl group, and R for an alphahydroxynaphthalene nucleus bearing a carboxyl groupin the 3 position, consisting in acting, in the absence of substances capable .of -neutralizin acids,

on l-hydroxyna hthalene-2-carboxy ic acid with arylchloro orms. v 5. The herein described process for the manufacture of arylmonohydroxyna hth lsence of substances capable of neutralizing acids. 1

7. As new products'the herein described arylmonohydroxynaphthylketones corresponding to the general formula RIF-CO- R, wherein R stands for an aromatic nucleus which may bear with the. exception of a carboxyl group other substituents and R for a hydroxynaphthalene nucleus which still bears negative substituents other than OH-groups, the said arylmonohydroxynaphthylketones being colorless or slight colored powders, soluble in alkalies and concentrated sulfuric acid with a more or less brownish yellow coloration.

8. As new products the. herein described arylmonohydroxynaphthylketones corregponding to the general formula RCO wherein R stands for an aromatlc nucleus which may bear with the exception of a carboxyl group other substituents and R for an alphahydroxyna hthalene nucleus bearing beside the O group already present other negative su stituents, the said arylmonohydroxynaphthylketones bem colorless or slightly colored dpowders, soluble in alkalies and concentrate sulfuric acid with a more or less brownish yellow colorationj 9. As new products the herein described arylmonohydroxynaphthylketones corre-' sponding to the generalformula R-CO-'-' R, wherein R stands for an aromatic nucleus which may bear with the exception of a carboxyl group other substituents and R for an alphahydrofiynaphthalene nucleus bearing beside the 0 -group already resent another negative substituent in t e 3 position, the said arylmonohydroxynaphthylketones being colorless co concentrated sulfuric acid with more or less brownish yellow coloration.

10. As new products the herein described arylmonohydroxynaphthylketones corregponding to the general formula R- CO- wherein R stands for an aromatic nucleus which may bear with the exception of a carboxyl group other substituents and or slightly. ored .powders, soluble. in alkalies and l concentrated sulfuric acid with a more orv less brownish yellow coloration;

11, As new products the herein described arylmonohydroxynaphthaleneketones cor- 1 respond' to the formula Ba-CO-R, wherein stands for a benzene nucleus which may, bear with. the exception of a carboxyl roup other substituents and R for a hy roxynaphthalene nucleus bearin 15 a carboxyl-gro'up in the 3 position, the sai arylmonohydroxynaphthaleneketones being colorless or slightly colored powders, soluble in alkalies and concentrated sulfuric acid with a'more or less brownish yellow colora- 2 tion.

12. As s new article of manufacture the herein described l-phenylketohe-Lhydroxgnaphthalene-3-carboxylic acid correspon ing to the formula I COOK melting at 205 C. and constitut' a colorless powder" soluble in alkalies an sulfuric acid to yellow solutions.

In witness whereof we have hereunto 35 signed our names this 5th day of July, 1922, in tha presence of two subscribin witnesses.

UILLAUME on MONT OLLIN. GERALD BONHOTE. Witnesses: V

AMAND BRAME, J. A. Diner. 

